Year 10 students at Braeside became Rock Balancers in their physics lesson this week. They investigated how to locate the centre of mass of regular shapes like a ruler and used plumb lines to find the centre of mass of irregular shapes. The rocks enabled the students to experiment with stable and unstable equilibrium. The centre of mass of any object is the point where its whole mass is believed to be concentrated. When something is in equilibrium and you apply a force to this point it stays in place but if the force is applied elsewhere? Your rock tower falls down!
